mfllleb



1111. 627,130. 1 11111111811 June 20, I899. F. .1. MULLER.

APPARATUS FOR MAKING BBIGUETS.

(Application filed Nov. 19, 1897.) (No 111111181.) 3 Shear-Sheet 1.

Wfinewes. Inven'fbr."

m: cams PETERS ca, PHDTO-LITNQ, WASHINGTON, 0.12,.

No. 627,130. Patented lune 20, I893.

F. J. MULLER.

APPARATUS FOR MAKING BR'IQUETS.

(Application filed N06. 19, 1897.)

3 sheets shaet 2.

(No Model.)

gal/chin? W Awzk HM an. wbumxfr- M'ifnesses.

No. 627,!30. Ratented June 2 0, I899.

F. J. MULLER. APPARATUS FOR MAKING BRIILUETS.

(Application filed Nov. 19, 1897.) "(No Model.) 3 Sheets-Sheet 3.

WWW

R In'z/enior T 0. Wm).

nrrnn ATENT FFICE.

APPARATUS FOR MAKING BRIQUETS.

SPECIFICATION forming part of Letters Patent No. 627,130, dated June 20, 1899.

Application filed November 19, 1897. erial No. 659,166. (No model.)

T0 (6 whom it may concern.-

Be it known that I, FRANZ JOSEF MUL- LER, machine manufacturer, of Bubna, near Prague, Empire of Austria-Hungary, have invented certain new and useful Improvements in or Relating to Apparatus for Making Briqnets, of which the following is a specification.

One example of apparatus according to this invention for manufacturing briquets of salt or other material is represented in the accompanying drawings, wherein-- Figure 1 is an elevation, partly in section. Fig. 2 is a plan, andFig. 3 is a side elevation, Fig. 4 being a view of the ejecting apparatus forming part of Fig. l at right angles to the direction in which it is viewed in said Fig. 1; and Fig. 5 is a vertical section, to an enlarged scale, of a part of Fig. 4:.

The apparatus comprises a hydraulic press A and two ejecting devices B B, arranged on both sides of the press on the same foundation. Between the columns 0 O of the hydraulic press and the side standardsD D of the ejecting-cylinders B B there are arranged, parallel to each other, two rails E E. On the under side of the press-head of the hydraulic press A there is a removable die or cover-plate G, which can be replaced by others and which is advantageously made of phosphor-bronze. The hydraulic ejecting devices B B have no press-head, and therefore are quite open at the top but the screw-bolts which connect the lateral standardsD D with the hydraulic cylinders have on the inside hook-shaped projections a-a, Figs. 2 and 4, against which the press mold frames hear when the briquets are being ejected in the manner hereinafter described.

The piston-plates N of the hydraulic ejecting devices B B are guided by lugs 79 1), formed on both sides of each plate in openings such as m, left between thelateral standards D D. Owing to their height these openings allow the piston only a limited stroke till the lugs 19 b strike against the cross-pieces c c in the standards D D. On the press-cylinder A, as well as on each of the ejecting-cylinders, there is arranged a double valve F F of well-known construction. Each double valve is operated bya hand-lever (see Figs. 3 and 4) for admittin g water under pressure to the cylinder with cross-section of a cell of the mold. 'K project below the mold and are connected which it is connected or discharging it therefrom. This water is supplied from an accumulator of well-known construction.

Each of the molds H H (see Fig. 5) is provided with four rollers a", which can roll on the rails E E; but the molds in consequence the mold over them against the press-head plate G (whereby the molds are closed at the top) when the press-piston plate rises a little upward and releases the'rods d d. Therefore the intermediate space between the pistonplate Q and common lower connecting-plate L of the stamps of the press-mold must be greaterthan the space between the bosses of the levers f f and the lower surface of the molds H and H. Each mold is lined with an acid-resisting material, preferably phosphorbronze, and provided with a compartment for receiving the loose salt intended to be made into briquets. In Fig. 2, for instance, the molds are represented as adapted for manufacturing twelve briquets'each, each of which briquets is intended to weigh one kilogram. As can be seen from Fig. 5, each compartment or cell of the mold has a round steel plunger K, on which a die 1), of phosphor-bronze, is screwed, having the same shape in plan as the Plnngers with each other by a common' plate L, so that all of them are lifted or lowered at once.

The linings of the movable molds are changeable. Therefore briquets of different sizes and weights can be manufactured.

To produce a quick return ofthe pressurepiston, as well as of the ejecting-pistons, the pressure-piston of the hydraulic press is provided with a ballast-load M, (see Figs. 1 and 8,) placed above the press, and the two ejectin g-pistons are provided with a ballast-weight M, Fig. 4:, attached below to the press-plates.

For manufacturing homogeneous briquets of pure salt of uniform weight it is necessary to have the salt properly prepared before it is pressed. The chief preparation consists in drying the loose salt drawn from the pan as soon as the liquid lixiviatin g solution has been drained off the crystals in order to get salt with only a certain limited degree of humidlty. As during the drying lumps are formed, these lumps must be first divided in order that they, together with the loose crystals, shall give uniform grains. All this is effected by suitable devices, which have nothing to do with the object of this invention.

The working of the salt-briquet press is as follows: At the commencement of work one mold is over the right-hand side (Fig. 1) ejectin g-cylinder and the other mold over the lefthand hydraulic ejecting cylinder, and the plungers K of all the mold-cells project below the molds. These cells are empty and destined to receive the previously-weighed salt. Filling-boxes containing salt weighed beforehand are placed on the molds,and all the cells of the molds are uniformly filled with weighed salt, as they exactly correspond with the cells of the filling-boxes. After that the fillingboxes are removed and one of the molds is pushed into the hydraulic press A the valve admitting the water under pressure is opened, whereby the piston-plate Q is raised and lifts the mold till the latter is closed at the top by the cover-plate or die G, attached to the presshead, and the compressing of the salt into the solid state takes place. \Vhen the compression is finished, the water under pressure is let out from the press by reversing the double valve. One mold is taken out from the press (in order to make place for the second mold) and placed over the ejecting device. For the purpose of ejecting the compressed briquets from the mold the water under pressure is admitted into the ejecting-cylinder by its valve F or F, whereby all the compressed briquets resting on their dies 19 are lifted by elevating the plungers K till the briquets are above the mold and remain there till they are grasped by specially-constructed hand-tongs and placed one on the other on a wagon. When the wagon is loaded, it is pushed into a drying-passage in order to dry the briquets completely, and then they are conveyed on the same wagon to the packing-magazine. The wagons and drying-passages are of the ordinary well known construction. After the briquets have been removed from the mold and when, if necessary, the dies of the press-stamps have been cleaned the water under pressure is let out from the ejecting-cylinders by reversing the double valve F or F, whereby all the stamps of the mold, as

they still rest on the piston-plate of the eject= ing-cylinder, will take their lowest position in the mold. Then the mold is ready to be filled again with weighed salt, as has been described. This filling the molds, compressing the salt, and ejecting the briquets takes place independently on both sides of the hydraulic press, which is a considerable advantage compared to automatic briquet-presses with turn-tables or a fixed or rotatable circular path where fixed molds are used. The molds alternately sliding on straight bars or rails into and from the press and for ejecting have also the advantage of enabling the mold of one side to be cleaned while the mold on the other side of the machine is working. Therefore there is never an interruption in manufacturing briquets. This compression system can be used for different loose materials (plants or minerals) and is especially advantageous when it is desired to produce briquets in great quantities.

Having now particularly described and ascertain ed the nature of the said invention and in what manner the same is to be performed, I declare that what I claim is- 1. In adevice for molding briquets, the combination with the mold H, plunger-s K below the same, the press-head plate G, and the weights P for pressing the said mold 1-1 against the head G, substantially as set forth.

2. In a device for molding briquets, a mold therefor having depending plungers below the same, the combination with the press, a press-head and weights and levers arranged in connection with said press for pressing the mold in engagement with the head, substantially as set forth.

3. In a device for molding briquets, amold having depending plungers, a molding-press having the head-plate G and press-head Q, the weights P, supporting-levers fabutting against said mold, and connections between said press-head Q and levers f, substantially as set forth.

4. In a device for molding briquets, the combination with a mold, the supporting-standards O, the press-head plate G, a press-head Q, an ejecting-plate N, the standards or uprights D having the fingers a, a thereon, arranged above said ejectingplate, and the mold-supporting tracks E, E, connecting said standards D, D, and O, O, substantially as set forth.

In testimony that I claim the foregoing as my invention I have signed my name in presence of two subscribing witnesses.

FRANZ JOSEF MULLER.

Witnesses:

ADOLPI-I FISCHER, HENRY SOHMOLKA. 

